Modules/game pawn/Usage

Define pawn's sprites

The visual of a pawn is defined by one or more sprite layers. The Game_Sprite structure allows to define the parameters of each layer : The X/Y offset of the layer relative to the Pawn position, the pattern number offset from the pattern number defined in the animation, the sprite color and a special flag for display.

Example:

A two color sprite (2 layer): ‎

const Game_Sprite g_SpriteLayers[] =
{
	{ 0,  0, 0,  COLOR_WHITE, 0 }, // Sprite position offset: 0,0. Pattern offset: 0. Color: White. No special flag
	{ 0, -8, 4,  COLOR_GRAY, 0 }, // Sprite position offset: 0,-8. Pattern offset: 4. Color: Gray. No special flag
};‎

Define pawn's animations

Each animation is defined by a list of Game_Frame structures that determine : The pattern number of the animation frame, the duration of the frame in number of display cycles, and a function to call when the character reach a given frame of the animation. Create a structure for each animation. You have to provide a complete list of all action that the pawn can do.

Example:

Push animation with function to trigger ‎

const Game_Frame g_FramesPunch[] =
{
	{ 0,	4,	NULL}, // Display pattern 0 for 4 render cycles
	{ 8,	4,	NULL},
	{ 8,	1,	DoPunch }, // call function DoPunch() when Pawn is displaying this frame
	{ 16,	4,	NULL },
	{ 24,	4,	NULL },
};‎

Define pawn's actions

An action is defined in the Game_Action structure and include a animation plus some parameters like the looping of the animation or a flag to determine if the action can be interrupted.

Examples: ‎

const Game_Action g_AnimActions[] =
{ //  Frames        Number                  Loop?  Interrupt?
	{ g_FramesIdle,  numberof(g_FramesIdle), TRUE,  TRUE },
	{ g_FramesMove,  numberof(g_FramesMove), TRUE,  TRUE },
	{ g_FramesJump,  numberof(g_FramesJump), TRUE,  TRUE },
	{ g_FramesPunch, numberof(g_FramesFall), FALSE, FALSE }, // Play once, can't be interrupted
};‎